The Fallen by Thomas E. Sniegoski

Aaron Corbet isn't a bad kid -- he's just a little different. archangel On the eve of his eighteenth birthday, Aaron dreams of a darkly violent landscape. He can hear the sounds of weapons clanging, the screams of the stricken, and another sound he cannot quite decipher. But gazing upward at the sky, he suddenly understands. It is the sound of great wings, angels' wings, beating the air unmercifully as hundreds of armored warriors descend on the battlefield. Orphaned since birth, Aaron is suddenly discovering newfound -- and sometimes supernatural -- talents. But not until he is approached by two men does he learn the truth about his own destiny, and his role as a liaison between angels, mortals, and Powers both good and evil, some of whom are hell-bent on his own destruction....

Thomas E. Sniegoski is the author of more than two dozen novels for adults, teens, and children. His books for teens include Legacy, Sleeper Code, Sleeper Agenda, and Force Majeure, as well as The Brimstone Network series. Also a comic book writer, Sniegoski collaborated with Bone creator Jeff Smith on the prequel miniseries Stupid, Stupid Rat Tails. Sniegoski was born and raised in Massachusetts, where he still lives with his wife LeeAnne and their French bulldog, Kirby. Visit him at Sniegoski.com.